In the previous article you read about Pixlr and GIMP. This article from Popular Science is a followup. It tells you how to use these two free tools to retouch old photos. The author also mentions other (paid) tools but they don’t fit well with the purpose of our site here.
When you want to revisit an old digital photo, you can simply scroll through your past social media postsor open your favorite storage app. But what about those physical prints from your film camera days—are they still filling up old albums and boxes in the basement? If so, they’re probably looking a little worse for wear. Once you digitize these pictures, you can harness modern-day software to restore them to their former glory.
PopSci